A tubular shaped item with a round or hexagon peripheral shape having two flat bearing surfaces perpendicular to the axis of the centrally located hole. It is designed to maintain a predetermined distance between assembled parts. The item may be with or without flange(s) of any peripheral shape. The length must exceed 25 percent of the outside diameter or distance across peripheral flats. (when the length, outside diameter, and/or distance across peripheral flats are designated as a tolerance, the maximum dimension will be used to determine compliance.) it must have one or more internal steps (counterbores) and/or external steps on either or both bearing surfaces. Excludes spacer, optical element. See also washer, recessed and washer, shouldered and recessed.
Classification: Other articles of iron or steel not wire nesoi
NSN 5895-01-541-4812
NSN 6150-01-530-1960
NSN 6320-00-546-9249
NSN 6320-01-345-5818
NSN 5998-00-786-8120
NSN 5996-01-319-3205
NSN 5910-01-608-3772
NSN 6110-00-542-2202
NSN 6320-00-098-2858
NSN 4140-01-416-4898
NSN 5930-01-146-4489
NSN 6105-00-105-8615